Title: Fluoromethane
CAS Registry Number: 593-53-3
Additional Names: Methyl fluoride
Molecular Formula: CH3F
Molecular Weight: 34.03
Percent Composition: C 35.29%, H 8.89%, F 55.83%
Literature References: Prepn in 82% yield by heating fluorosulfonic acid methyl ester with KF: Zappel, Jonas, DE 1131197 (1962 to Bayer).
Properties: Gas. Agreeable ether-like odor. Burns with evolution of HF, the flame being about as colorless as that of alc: Dumas, Peligot, Ann. 15, 59 (1835). d (liq; -78°) 0.8774. d (gas) 1.1951 (air = 1); d (gas) 1.0813 (oxygen = 1). Dipole moment 1.81. Molecular volume: 22.03. Van der Waals constants: 0.00923; 0.002350. Critical temp 44.9°; crit press. 62.0 atm. Dielectric constant (for wavelengths below 104 cm) = 1.00948. mp -141.8°. bp872 -75.7°; bp760 -78.2°. bp143 -103.7°. One hundred vols of water dissolve 166 vols of the gas at 15°. Freely sol in alcohol, ether.
Melting point: mp -141.8°
Boiling point: bp872 -75.7°; bp760 -78.2°; bp143 -103.7°
Density: d (liq; -78°) 0.8774; d (gas) 1.1951 (air = 1); d (gas) 1.0813 (oxygen = 1)
CAUTION: Narcotic in high concns. |